Four-cycle motor.



PATENTED JUNE 2, 1908.

A. G. SPENCER.

FOUR CYCLE MOTOR.

APPLICATION FILED JUNE 28. 1906.

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wzeau'eaz' combustion, except one or more oFrrcE.

ALEXANDER GIBBY-SPENCER, OF RAHWAY, NEW JERSEY.

FOUR-CYCLE Moron.

Specification of Letters Patent.

Patented June 2, 1908.

Application filed June 28, 1906. Serial No. 323,953.

To all whom it mag concern:

Be it known that I, ALEXANDER GIBBY.

SPENCER, a citizen of the United States, residing. at No. 138 St. Georges avenue, Rahway Union county,.New Jersey, have invented a new and useful Four-Cycle Motor, Consisting of One or More Cylinders, of which the following is a specification.

My invention relates to an improvement in four cycle motors, and comprises a motor in which the piston operates in conjunction with an inlet valve, one or more exhaust ports suitably located in the cylinder wall and a suitable ignition device, or means for causing an explosion of the charge, thereby simplifying and performing all the functions I of the present type of four cycle motor, the

products of combustion in accordance with my invention being causedto discharge wholly through-said exhaust port or ports in the side wall of the cylinder.

The object of my improvement is 'to pro:

vide a four cycle motor without any exhaustvalve or other outletfor the products of orts suitably loc'ated in the cylinder si e-wall, as

hereinafter described, the head end-of the cylinder being entirely closed exce t for the inlet forthe combustion motive uid. Referring to the accompanying drawings: Figure 1 represents a vertical section of a motor, with automatic inlet valve, embodying my invention, and Fig. 2 avertical section of a motor havin a mechanically operated inlet "valve and a so embodying my invention. A. denotes the cylinder and B the cylinder wall having exhaust orts'C, C of suitable size and shape and so. coated in the wall as to be uncovered by the piston D, at or near the end of its power' and suction strokes. The piston is provided with rings E and by its reciprocating motion alternately .covers and uncovers the orts C, covering said ports during nearly "t e whole of thesuction strokes, whereby the combustion motive fluid is drawn into. the cylinder, covering said ports during nearly the whole ofthe compression strokes, whereby the necessary compression is obtained, and uncovering said ports at or near the end of the power strokes, whereby the products of combustion discharge wholly through said orts.

- F denotes the induction or in et valve; Gr exhaust pipes leading to a suitable muffler or mufiiers; and H the connecting rod, pivotally v connected at its upper end to the piston D by a wrist pin I and suitable box or bearing J, and pivotally connected at its lower end to the crank member L of crank shaft K, by a suitable box or bearing M. The reciprocating motion of the piston imparts through the rod H a rotary motion to the crank shaft.

N designates a-fly wheel, secured, to the crank-shaft K, and P a crank-case, sup orting the.boxes or hearing The gear Q is secured to the crank-shaft K and drives the gear R, which is secured to the O for said s aft.

shaft or pinion S, whereby the commutator T,

which is also secured to said shaft S, is caused to revolve at suitable speed.

U is the valve-cage supporting the valve F. The valve F may be opened either by the vacuum caused by the suction stroke of the piston D, or otherwise mechanically opened.

V is the inlet valve-spring and IV the feed pipe or inlet pi e.

Z 's the spar plug or ignition device.

In Fig. 2 the numeral 1 represents a cam secured to shaft S, the rotary motion of which causes the cam 1 to raise the push rod 2, thereby opening the valve F.

What occurs in each cylinder during the operationof the motor, is as follows: The piston being at or near performs the first stroke, thereby creating a vacuum anddrawing in 'a charge, then performs the second stroke, thereby compressing said charge, at about which time ignition occurs, then performs the third or power stroke, uncoveringthe at or near the end of said stroke, whereby the exhaust dischar es Wholly, through said port or orts, and t en performs the fourth stroke, t ereby completing the cycle.

' Among the advantages of the motor .of my invention, it may be mentioned that it is more simple and durable in construction and less expensive of manufacture than fourcycle motors of the character heretofore known em loying exhaust ports and valves at the hea end of the cylinder. Iclaim: v

A four cycle'motor comprising a cylinder having in its side an exhaust ort and at its head end an inlet for the com ustion motive fluid and an inlet valve therefor, said end of the cylinder being permanently closed except for said inlet, apiston withm said cylinder, a piston rod pivotally connected with said piston, and a crank-shaft whose crank memthe cylinder head,

port or ports 0 when the suction and power strokes of the same as set forth.

her is pivotally connected with said rod, said I cylinder and on the conclusion of the power 10 exhaust port and piston being in proper relastrokes thereof the products of combustion tion to each other to enable said piston to discharge Wholly through said exhaust port cover said port during nearly the Whole of I- then uncovered by said piston; substantially and to uncover said port at about the end of A. GIBBY SPENCER.

the suction and power strokes of said piston, Witnesses: whereby on the suction strokes of the piston W. F. KENNEDY, the said fluid is thereby drawn into said ROBERT D. GIBBY. 

